Minor - Adds dynamic screen depth and near controls - V14.4.0

Implements dynamic adjustment of screen depth and near clipping plane distances via the ImGui interface.

This allows users to modify the perspective projection in real-time, affecting the rendering of the scene.

The changes involve:
- Adding screen depth and near variables to the application class.
- Exposing these variables in the ImGui settings window.
- Adding functions to the application and d3d classes to update the projection matrix based on new screen depth and near values.
- Updates the sky sphere size to use world scale.

enginecustom/src/inc/system/d_3d_class.h

@@ -165,6 +165,16 @@ public:
 	 */
 	void disable_alpha_blending();
 
+	/**
+	 * Set new projection parameters.
+	 * @param width The new width for the projection matrix.
+	 * @param height The new height for the projection matrix.
+	 * @param screenDepth The new screen depth.
+	 * @param screenNear The new near clipping plane distance.
+	 * @return True if the projection parameters were set successfully, false otherwise.
+	 */
+	bool set_projection_params(int width,int height,float screenDepth, float screenNear);
+
 private:
 	bool vsync_enabled_;
 	int video_card_memory_;